At Fink's (Steve Lemme) laboratory, he handles a frog in order to collect a specimen. While the cameras rolled, Lemme cupped the frog on its back and gently massaged its throat and abdomen — an action which naturally relaxed the animal. A special effects technician just off camera fired a syringe filled with non-toxic, neon green tempera paint at the actor's face at an angle that completely avoided the frog. Trainers switched out the frogs at each take, and each one was only put on its back once.

In the background, other scientists perform the same procedure on fake frogs. Bullfrogs appear in aquariums throughout the laboratory, and the aquarium lights were turned off between takes to prevent overheating the frogs.

In one scene, the guys chase a herd of sheep through a wooded area. After gathering the herd on mark, mounted wranglers drove the two dozen sheep toward a holding area in the corner of the pasture while the actors ran between them.

When a German shepherd brought in to herd the sheep exhibited aggressive behavior, the Safety Rep and the production considered using either a border collie or Queensland healer before finally deciding on horses as an alternative. Once new arrangements had been made and the horses were brought to the set, only one take was needed to film this mild action.

Fitz, a brown and black ram, accompanies the German team as its mascot in two scenes. The animal merely stood in place while one of the actors held a lead rope and drank beer. The costume seen on Fitz consisted of adult incontinence underwear covered by a yellow cloth diaper fastened with Velcro. Safety precautions on the set included enforcing quiet all around and no movement during filming, as well as checking the area for any potential footing problems.

The dead deer lying on its side next to Barry in the woods was a prop rented by the production.